Why I have chosen crematoria as a subject for architectural study will be explained by describing the state of cremation in Japan and psychological, spatial requirements of the people to crematoria. I investigated conditions of the site, the location and existing facilities. The outline is as following. 1. Crematorium is a facility whose architectural needs have not appealed loudly. But it has originaly sophyscated claim on the earth. In spite of detestation to the facility cremation is very popular in Japan. This situation made me up my mind to study the subject. 2. Untill today there are very few studies and investigations. As to the rearrangement of crematoria, they have been treated negatively by the state. Partly because two ministries put them within the jurisdiction…the ministry of welfare concerning the law of burial ground and another is the ministry of construction which treats crematoria as one of the objects concerning city renovation. 3. The method of study and investigation must be carried out by many-sided way and by actual proof. For example, to put the figures of cremation and crematoria in order going back to the Taisho-era, to analize a ledger of crematorium, to carry out a questionaire, to investigate a phase of cremation in one day and to go out to see the facility of deserted creteria in the field, to read the descriptions about crematoria in the history of administration and so borth. 4. The facility called "crematoria" in one bracket has been clarified about it's outline and ransition by the figures. Difference by region and by ownership were taken into consideration and also usage statistics was added. 5. Concerning favorable conditions for crematorium site the actual ones were analized by checking the following items and were found there are many problems. Items : Land category of the site, Usage category of the site, Jointly used together or neighbouring facility, Distance from the center of the urban district and so forth. 6. Scale of the facility was grasped by total floor area, site space, number of cremation furnace. Besides, newly constructed or equipped facilities after Showa-50 year were clarified concerning their charactor. The picked up facilities are based on the data which was made by investigation of actual conditions in the end of Showa-53 year.